T183,  Iron tsuba signed Yoshiaki and kao.  6.8 x 7.3 x .4 cm.  The nakago hitsu ana is .8 x 2.7 cm.  Robert Haynes lists quite a few smiths who signed Yoshiaki; I’m not sure which one this is.  I can tell you that the carving is impressive and condition is excellent.  At one time this tsuba was in a large (museum?) collection, as evidenced by the # painted inside the nakago ana.  $300.